Small-Scale Vacuum Tumbling Machines
The GR Series Laboratory Vacuum Tumblers are engineered for precision, consistency, and versatility in food science and small-scale processing. Developed to meet the demands of food R&D laboratories, university food engineering programs, pilot plants, and specialty food producers, these compact machines deliver the critical benefits of vacuum tumbling in a user-friendly, bench-top format. Utilizing an internal baffle design that gently lifts and tumbles ingredients, the process promotes protein extraction, even marinade distribution, and improved product binding. With programmable controls for time, interval, and vacuum level, the GR Series enables repeatable experimentation and production of superior-quality marinated meats, poultry, and more.
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Product Highlights:
- Designed for Research & Development: The ideal tool for food labs, educational institutions, and small-batch producers to develop recipes, test marinades, and study the effects of tumbling on texture and yield.
- Programmable for Precision & Repeatability: Features a waterproof digital control panel that allows users to set total time, tumble time, rest intervals, and vacuum levels, enabling automated, consistent, and repeatable process cycles crucial for experimentation.
- Efficient & Gentle Tumbling Action: The unique internal baffle and dome-shaped ends create an optimal tumbling environment that maximizes product movement, ensures uniform marinade coverage, and tenderizes without damaging delicate ingredients.
- Hygienic & Durable Construction: Built with high-quality stainless steel contact surfaces and a smooth, easy-to-clean interior. The robust design ensures quiet operation and long-term reliability in laboratory and light commercial settings.
- Scalable Capacities: Available in six models from 10L to 70L effective volume, providing the perfect size for sample testing, teaching demonstrations, or small-scale specialty production.
Technical Specifications
| Model | Effective Capacity (L) | Total Capacity (L) | Power (KW) | Voltage (V) | Speed (RPM) | Vacuum Level (MPa) | Dimensions (L×W×H mm) |
|---|---|---|---|---|---|---|---|
| GR-10L | 10 | 20 | 0.32 | 220 | 7 | ≤ -0.08 | 800 × 450 × 750 |
| GR-15L | 15 | 30 | 1.3 | 380 | 7 | ≤ -0.08 | 850 × 450 × 700 |
| GR-20L | 20 | 40 | 1.3 | 380 | 7 | ≤ -0.08 | 900 × 500 × 800 |
| GR-30L | 30 | 60 | 1.3 | 380 | 7 | ≤ -0.08 | 900 × 550 × 850 |
| GR-50L | 50 | 100 | 1.5 | 380 | 7 | ≤ -0.08 | 900 × 600 × 850 |
| GR-70L | 70 | 140 | 1.5 | 380 | 7 | ≤ -0.08 | 1100 × 800 × 1080 |
*Note: Standard speed is fixed at 7 RPM. An optional Variable Frequency Drive (VFD) is available for speed adjustment from 0 to 11.5 RPM. Fixed speeds can also be custom-manufactured upon request.*
In-Depth Advantage Analysis
1. Optimized for Scientific and Educational Applications
The GR Series is purpose-built for controlled environments where process parameters must be exact and repeatable. The programmable digital controller is its core, allowing researchers and students to meticulously define every aspect of the tumbling cycle—total duration, active tumbling periods, rest intervals (for deeper marinade penetration), and vacuum level. This turns subjective “feel” into quantifiable, documentable data, essential for product development, thesis work, and quality control protocols.
2. Engineered to Maximize Product Quality in Small Batches
The mechanical design directly targets key quality outcomes. The dome-shaped ends and internal baffles create a continuous, gentle fall of product, ensuring every piece is evenly massaged and coated. This action:
- Extracts soluble proteins to improve natural binding and sliceability.
- Distributes marinades, brines, and seasonings uniformly without bruising or damaging the meat fibers.
- Enhances tenderness, juiciness, and final cooked yield, producing restaurant-quality results from a compact machine.
3. Unmatched Flexibility for Process Development
The availability of an optional Variable Frequency Drive (VFD) is a critical feature for advanced applications. By allowing the drum speed to be finely tuned from 0 to 11.5 RPM, users can simulate different industrial tumbling intensities or create custom gentle cycles for fragile products like fish or certain vegetables. This flexibility makes the GR Series a powerful tool for process scaling, from lab bench to full production.
4. Built for Ease of Use and Maintenance
Designed with the user in mind, the machine features a simple, intuitive control panel that is also waterproof for easy wipe-down. The all-stainless-steel construction of the drum and interior ensures compliance with food safety standards, prevents corrosion, and allows for quick, thorough cleaning between batches or different experimental runs, minimizing downtime and cross-contamination.
Why Choose NPW Equipment?
NPW Equipment is dedicated to supporting innovation at every stage of food production. The GR Series Laboratory Tumbler embodies our commitment to providing precision tools that bridge the gap between theoretical research and practical, high-quality output. We deliver more than a machine; we provide a platform for discovery, education, and small-scale excellence.
Request a Technical Specification Sheet
Equip your lab or kitchen with precision tumbling. Contact us today for the detailed technical sheet on the GR Series. Specify if you are interested in the standard fixed-speed models or require the adjustable speed VFD option for your research or production needs.
